A joint for articulations with pseudo-elastic elements comprising a pair of coupled box-shaped elements (13, 14), facing each other in an open surface, moveable and rotating with respect to each other, around a common longitudinal axis (15) and containing a spring-charged pseudo-elastic element (12) which causes the reciprocal rotation, the box-shaped elements (13, 14) carrying an arm (20, 25) facing outwardly for connection with associated portions of an articulation and including stop elements (21, 32; 132, 20) of their rotation. The spring-charged pseudo-elastic element (12) comprises a curved portion, more or less closed to form a ring (36) and two straight portions (37) terminating in ends (23, 34), inserted into holes (22, 33) of the box-shaped elements (13, 14), the straight portions (37) being intersected to obtain a pre-charge before being inserted into the holes (22, 33).